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Search: Posts Made By: tinwelp
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 04-30-2015, 12:44 AM
Replies: 56
Views: 1,786
Posted By tinwelp
I think you're right on the vacuum leak in my...

I think you're right on the vacuum leak in my case. I used these press-to-fit connectors everywhere and although they do a good job when the lines are pressurised above ambient, there is a potential...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 04-29-2015, 07:04 AM
Replies: 114
Views: 9,304
Posted By tinwelp
HeatXfer, very nice work. You say you are...

HeatXfer,
very nice work. You say you are degassing, but are you degassing before you make the pour, then degassing the whole mould once filled?

I've worked with polyurethane castings before,...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 04-29-2015, 03:45 AM
Replies: 56
Views: 1,786
Posted By tinwelp
Wow! I'm impressed and confused in equal...

Wow! I'm impressed and confused in equal measure!! I tried exactly this quite a while ago, but I failed to pull any fuel. Even when I had something of a gravity feed (from the float bowl drain...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 04-28-2015, 03:42 AM
Replies: 56
Views: 1,786
Posted By tinwelp
Nicely Dust. I'm very happy you grasped my...

Nicely Dust. I'm very happy you grasped my concept with only a few words. I think the model engine carb would be ideal, perhaps less-so for the chainsaw engine carb. The diaphragm carb will...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 04-27-2015, 09:09 AM
Replies: 56
Views: 1,786
Posted By tinwelp
Dust, sorry I got busy... and left you without...

Dust,
sorry I got busy... and left you without answers.

From experience, there is not enough vacuum during starting to pull much of any fuel through your proposed idle jet in the manifold...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 04-24-2015, 07:04 AM
Replies: 56
Views: 1,786
Posted By tinwelp
Dust, no, all my plumbing was external. ...

Dust,
no, all my plumbing was external.

Please tell of your accel. pump jet mods. It sounds like it's worth doing.

Hunting in my 'old project archive' I think I have something that may work. ...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 04-23-2015, 01:51 AM
Replies: 56
Views: 1,786
Posted By tinwelp
Dust, my solution effectively replicated the...

Dust,
my solution effectively replicated the FCR choke circuit, but externally. It works OK, but the caveat is the weather here rarely sees temperatures much below freezing, and these days I'm...
Forum: Some Assembly Required 04-21-2015, 01:52 AM
Replies: 28
Views: 1,470
Posted By tinwelp
What gives?

Gentlemen,
I don't think I've ever seen such a protracted discussion over such a simple component! Seriously. This is not a difficult part to design. It's a piece of tube, pretty much any...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 04-20-2015, 05:49 AM
Replies: 5
Views: 520
Posted By tinwelp
Erm, no comment. :D Cheers... Paul

Erm, no comment.

:D

Cheers... Paul
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 04-13-2015, 12:01 AM
Replies: 435
Views: 76,645
Posted By tinwelp
62 litres, or 16.4 US gallons in old money. ...

62 litres, or 16.4 US gallons in old money.

It's a monster for sure.

Cheers... Paul
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 04-03-2015, 03:30 AM
Replies: 435
Views: 76,645
Posted By tinwelp
Unfortunately, I agree. For me a beautiful bike...

Unfortunately, I agree. For me a beautiful bike starts with raw functionality, and anything beyond that is just icing on the cake.

Here I think the tank is too big to be practical, the exhaust...
Forum: Some Assembly Required 04-02-2015, 11:46 AM
Replies: 57
Views: 8,174
Posted By tinwelp
Dread, for sure, but what you really need is...

Dread,
for sure, but what you really need is high flow, not pressure... and that looks like a Chinese copy of a Facet brand pump. Not ideal. Search for fuel transfer pump. Something like this:...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 04-02-2015, 09:17 AM
Replies: 9
Views: 765
Posted By tinwelp
wiseblood, there are at least three second-hand...

wiseblood,
there are at least three second-hand ones on ebay UK at the moment. The cheapest is only 41GBP... not a big pain, even with the 10GBP shipping.
...
Forum: Some Assembly Required 04-02-2015, 01:54 AM
Replies: 14
Views: 798
Posted By tinwelp
mrnobeard, it really depends on what you want...

mrnobeard,
it really depends on what you want to achieve, as several of the other contributors have made quite clear. However, perhaps another option is to buy that frame you found (if the price is...
Forum: Some Assembly Required 04-02-2015, 01:44 AM
Replies: 57
Views: 8,174
Posted By tinwelp
Dread, I think you've got it covered. Good...

Dread,
I think you've got it covered. Good luck!

Cheers... Paul
Forum: Some Assembly Required 04-02-2015, 01:42 AM
Replies: 57
Views: 8,174
Posted By tinwelp
Sean, no worries from my side, but having...

Sean,
no worries from my side, but having designed and developed spark ignited multi-fuel engines for the US and French armed forces, which include the possibility of starting and running on...
Forum: Some Assembly Required 04-01-2015, 08:09 AM
Replies: 57
Views: 8,174
Posted By tinwelp
Dread, as Gr0nk says, it's your call as it's...

Dread,
as Gr0nk says, it's your call as it's your motor at risk. I was just trying to give you the benefit of my painful experience many years ago. If you've not the facility or knowledge to...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 04-01-2015, 05:50 AM
Replies: 711
Views: 240,019
Posted By tinwelp
bigkuri, you need to look here then: ...

bigkuri,
you need to look here then:

https://www.youtube.com/watch?v=9csDeiQE5lg

Then follow all the links...

One day I fully intend to do this.

edit: OK, my bad. kamanya beat me too...
Forum: Some Assembly Required 04-01-2015, 03:34 AM
Replies: 57
Views: 8,174
Posted By tinwelp
Dread, is there not a haulage yard around where...

Dread,
is there not a haulage yard around where you live, or a garage that specializes in big diesel engine repair? They normally have good steam cleaning equipment and won't charge much to squirt...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 04-01-2015, 01:22 AM
Replies: 9
Views: 765
Posted By tinwelp
wise, ah, I understand now. The way you wrote...

wise,
ah, I understand now. The way you wrote it suggested it was part of the normal service schedule! It had me scurrying away to peer into my owner's manual... :rofl

Thanks for the...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 04-01-2015, 01:09 AM
Replies: 30
Views: 1,711
Posted By tinwelp
FCR 39s. For: torque and throttle response,...

FCR 39s.
For: torque and throttle response, ease of jetting changes, noise, improved economy (when needed)!
Against: NOT a bolt-on-and-run mod (no TPS, silly cable arrangement, difficult to...
Forum: Some Assembly Required 03-31-2015, 11:47 PM
Replies: 57
Views: 8,174
Posted By tinwelp
Dread, I don't want to cast a shadow on your...

Dread,
I don't want to cast a shadow on your build or anything similar, but if you value your motor, you really really really need to get all the blasting media out of the frame before you try to...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 03-30-2015, 11:49 PM
Replies: 9
Views: 765
Posted By tinwelp
Really? I've never done that before! As for...

Really? I've never done that before!

As for the noise, there shouldn't be anything loose inside the tank unless a friendly neighbourhood toddler decided to add a few small stones when the filler...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 03-21-2015, 04:07 AM
Replies: 7
Views: 844
Posted By tinwelp
Thorette, it's a lot easier than you think if...

Thorette,
it's a lot easier than you think if you have access to the current injector pulsewidth. I'd question how rapidly the data are updated on the OBD bus, but you could get to the real data...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 02-22-2015, 01:36 AM
Replies: 10
Views: 1,158
Posted By tinwelp
You American guys sure love your tractors......

You American guys sure love your tractors... great for ploughing fields or as an ornament for the local coffee-shop car park, but...

Orange is good.

Carry on.

Cheers... Paul
Forum: Some Assembly Required 02-13-2015, 06:11 AM
Replies: 92
Views: 11,430
Posted By tinwelp
Plenty strong enough I think, but I'd be worried...

Plenty strong enough I think, but I'd be worried about the ratchet popping out of the socket welded to your frame. Similarly, what happens when the peg gets 'unweighted' when going over rough ground...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 02-12-2015, 11:20 AM
Replies: 27
Views: 1,460
Posted By tinwelp
Bowber et al, I really don't want to get into a...

Bowber et al,
I really don't want to get into a debate on the politics or other reasoning of adding ethanol by the fuel companies, but they do and have done for quite a time over here in France. ...
Forum: Some Assembly Required 02-11-2015, 11:24 PM
Replies: 595
Views: 80,215
Posted By tinwelp
Eric, that's a long and painful way to make a...

Eric,
that's a long and painful way to make a hole...

Just a suggestion, but life would be a little easier or faster (pick your poison) if you were to buy some hole saws.

Otherwise, and as...
Forum: Some Assembly Required 02-05-2015, 12:49 PM
Replies: 595
Views: 80,215
Posted By tinwelp
Eric, pretty sure they're SU 'HS' series carbs....

Eric,
pretty sure they're SU 'HS' series carbs. An old British company (originally called Skinner's Union) dating back to the earliest years of the 20th century. The carbs are of the CV type and...
Forum: Some Assembly Required 01-30-2015, 06:18 AM
Replies: 595
Views: 80,215
Posted By tinwelp
Oh, I'm quite sure they're here, watching and...

Oh, I'm quite sure they're here, watching and judging... I find biting hard on my tongue helps... but the work presented is entertaining enough to compensate. Grammatically challenged? Sure. ...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 01-25-2015, 02:46 AM
Replies: 11
Views: 805
Posted By tinwelp
Pete, this may be an inappropriate...

Pete,
this may be an inappropriate suggestion... but we know nothing of why you want to do this. How about considering one of the the other 9x0 monoshocks and revalving it? The SM and the SD don't...
Forum: Some Assembly Required 01-16-2015, 02:33 AM
Replies: 595
Views: 80,215
Posted By tinwelp
What you need for the sort of tube you're bending...

What you need for the sort of tube you're bending is a mandrel bender. They work faultlessly even on very thin-wall tubes in all common tube materials. Unfortunately they're not cheap, typically...
Forum: Some Assembly Required 01-15-2015, 09:31 AM
Replies: 595
Views: 80,215
Posted By tinwelp
... or just buy preformed bends, then cut to fit....

... or just buy preformed bends, then cut to fit. Super-cheap in mild steel.

Just a suggestion, but I would strongly consider adding braces from the bends you have here, across to the top shock...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 01-13-2015, 07:35 AM
Replies: 47
Views: 4,450
Posted By tinwelp
... agreed. Is there any way the o rings on the...

... agreed. Is there any way the o rings on the feed tube could have been damaged, do you think?

Cheers... Paul
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 01-12-2015, 12:31 PM
Replies: 47
Views: 4,450
Posted By tinwelp
Allezgrand, I looked at your video and I think...

Allezgrand,
I looked at your video and I think we are definitely missing something here. Your oil light was a little slow to go out after startup... OK, not so problematic, and not really unusual. ...
Forum: Some Assembly Required 01-07-2015, 05:36 AM
Replies: 595
Views: 80,215
Posted By tinwelp
Yes, pretty much, although the angle you choose...

Yes, pretty much, although the angle you choose will affect the final wheel-travel a little. How much will depend on the real geometry, of which we know little. The only thing I'd be super-cautious...
Forum: Some Assembly Required 01-06-2015, 10:11 AM
Replies: 595
Views: 80,215
Posted By tinwelp
Agreed, but I do think it needs to be turned...

Agreed, but I do think it needs to be turned around! I'm pretty sure the rear shock is upside down. Sure it's a pressurised unit, but it's still probably asking for trouble...

Just my...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 12-29-2014, 01:57 AM
Replies: 11
Views: 959
Posted By tinwelp
Dustodust, how cold is "extreme cold"? I've...

Dustodust,
how cold is "extreme cold"? I've never tried at under 2 or 3C... so if you're talking something well below freezing, I have no experience.

Why the FCRs are not fitted with chokes is...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 12-28-2014, 04:28 AM
Replies: 11
Views: 959
Posted By tinwelp
Synchro, float levels or a slightly ailing fuel...

Synchro,
float levels or a slightly ailing fuel pump. I chased exactly these symptoms an age ago after fiddling with vent hoses and the like (which made very little difference on my 950SM). I...
Forum: Crazy-Awesome almost Dakar racers (950/990cc) 12-24-2014, 11:12 AM
Replies: 26
Views: 1,442
Posted By tinwelp
Michael, I'm very sure these are SM forks,...

Michael,
I'm very sure these are SM forks, probably 950SM... and probably 2006 or 2007.

Cheers... Paul
Showing results 1 to 40 of 164

 
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