ADVrider

Go Back   ADVrider > Bikes > Thumpers
User Name
Password
Register Inmates Photos Site Rules Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
Old 08-14-2012, 01:48 AM   #13471
rowie
Gnarly Adventurer
 
Joined: May 2011
Location: Proserpine, QLD
Oddometer: 220
Quote:
Originally Posted by robmoto View Post
allso make sure your not running even number sprockets front and back for chain and sprocket wear.
Rob,

I have never heard of this before. How, what, when, where, why? Standard gearing for my 650 is 16/42, although I am planning to get a 15t DR750 sprocket (for the wider spline)

Cheers,
David.
__________________
Rowie's DR650RS Rebuild
rowie is offline   Reply With Quote
Old 08-14-2012, 04:57 AM   #13472
robmoto
Beastly Adventurer
 
robmoto's Avatar
 
Joined: Feb 2009
Location: Australia
Oddometer: 3,824
Quote:
Originally Posted by rowie View Post
Rob,

I have never heard of this before. How, what, when, where, why? Standard gearing for my 650 is 16/42, although I am planning to get a 15t DR750 sprocket (for the wider spline)

Cheers,
David.
Yep it has been discust before on this forrum, and aparently the early DR 650 is one of only a few that run even numbers, maybe some motor cross or racing bikes do but that isn,t normal riding where you clock up heaps of klm,s.
__________________
I ride alone and not a KTM in sight .
Menace Racing supported by Robmoto Industries
robmoto is offline   Reply With Quote
Old 08-14-2012, 04:58 AM   #13473
Simosez
Gnarly Adventurer
 
Simosez's Avatar
 
Joined: Oct 2010
Location: eternally sunny lithgow
Oddometer: 386
good luck getting one of those!!
__________________
"Safety Turd. Because the only skid marks should be on the dirt."
"If I could get back all the money I ever spent on dirt bikes, I'd spend it all on dirt bikes."
DR750 BIG
Husaberg 350
Simosez is offline   Reply With Quote
Old 08-14-2012, 05:03 AM   #13474
robmoto
Beastly Adventurer
 
robmoto's Avatar
 
Joined: Feb 2009
Location: Australia
Oddometer: 3,824
Shane, your starting to get the 800 all together now, a big pluss for the bike would be Resi,s/ Lars header pipe and a good can on the end of it.
__________________
I ride alone and not a KTM in sight .
Menace Racing supported by Robmoto Industries
robmoto is offline   Reply With Quote
Old 08-14-2012, 07:30 AM   #13475
rowie
Gnarly Adventurer
 
Joined: May 2011
Location: Proserpine, QLD
Oddometer: 220
Quote:
Originally Posted by robmoto View Post
Yep it has been discust before on this forrum, and aparently the early DR 650 is one of only a few that run even numbers, maybe some motor cross or racing bikes do but that isn,t normal riding where you clock up heaps of klm,s.
Do even numbered sprockets make the chain wear faster?

Quote:
Originally Posted by Simosez View Post
good luck getting one of those!!
Here's 8 of them from the same seller on ebay

http://www.ebay.com.au/itm/320959686249
http://www.ebay.com.au/itm/330775333215
http://www.ebay.com.au/itm/221094950315

From Slipstream Performance with 14, 15, 16, 17 teeth

https://www.slipstreamperformance.co...ducts_id=28272

Plus a few listed on ebay UK and Germany

Wasn't too hard to find them
__________________
Rowie's DR650RS Rebuild
rowie is offline   Reply With Quote
Old 08-14-2012, 01:17 PM   #13476
Resi
Gnarly Adventurer
 
Resi's Avatar
 
Joined: Jul 2011
Location: Nassau Area
Oddometer: 211
Quote:
Originally Posted by rowie View Post
Do even numbered sprockets make the chain wear faster?
Yap. It's a common "problem" on toothed gears and chain drives.

Regarding the >15 teethed sprocket: Be aware that the chain guard gets thinner the more teeth are on the sprocket...


Cheers,
Lars
Resi is offline   Reply With Quote
Old 08-14-2012, 03:01 PM   #13477
shanekfalcon
Gnarly Adventurer
 
shanekfalcon's Avatar
 
Joined: May 2010
Oddometer: 273
Quote:
Originally Posted by robmoto View Post
Shane, your starting to get the 800 all together now, a big pluss for the bike would be Resi,s/ Lars header pipe and a good can on the end of it.
Thanks Rob, I've got a Lazer Produro to go on, but it did not come with correct fittings, so I'll do that next in the next few weeks. The local specialised/custom exhaust shop is about 15 minutes ride away and owned by the husband of a client of mine, so this should be easy enougth. The header pipe will come, but probably about the same time as the carbies. I'm getting the Lars chain guide in the next few weeks as well.
shanekfalcon is offline   Reply With Quote
Old 08-14-2012, 08:07 PM   #13478
Bob Herr
Oilpatch Univ. Graduate
 
Joined: Aug 2009
Location: Mt. Vernon,IL
Oddometer: 266
DR750 16Tsprocket

Thanks to all for the advice and comments on the 16T sprocket for my 88 DR. That overseas shipping is rough!!! $22.00 to ship a $23.00 part from Australia. Bob
__________________
Illinois!!! Another Liberal Democratic Party economic waste land.

Much Too Young(To Feel This Damn Old)
Bob Herr is offline   Reply With Quote
Old 08-14-2012, 10:14 PM   #13479
Ladder106
It's a short cut, really
 
Ladder106's Avatar
 
Joined: Jan 2005
Location: Davis, CA
Oddometer: 4,922
Maybe 16 isn't the answer

BigBob over at the DRinfo forum

www.drbig.info

sez a 16 won't fit. I think he means that the case guard gets too thin (like Resi said) so...maybe not worth the risk.

Do you have an 88 with a rear drum?

If so you'd have to use a JT 1825. They have a 42 and a 45.

If you have the disc brake rear hub its a JT 828

Rear sprockets from the 1984-86 RM250 E,F,G will also fit this hub. Jt has them in 42, 46, 47 tooth. Others may have more selection.

The 15/47 givesjust over a 3:1 ratio so moving the CS to a 16 would be like going to a 44 in the rear. The 42 might be interesting but you'd have to chop a few links off the chain. That makes going back a bit more expensive.

I'm sure the Big would pull it at cruising speeds but you'd likely never get full revs in 5th.
Ladder106 is offline   Reply With Quote
Old 08-14-2012, 10:26 PM   #13480
Ladder106
It's a short cut, really
 
Ladder106's Avatar
 
Joined: Jan 2005
Location: Davis, CA
Oddometer: 4,922
...OR get one in the USA

You should also be able to get a 16T from a 1990-1995 USA DR650.

The splines are the same..the overall thickness of the sprocket is 3mm less. That shouldn't be a big problem (but Suzuki did make the 750/800 sprockets thicker for a reason, I'd guess).

If you just want to experiment, that would be a lot cheaper.

Also...when you mount the CS sprocket the flat side goes OUT...the side with the shoulder goes IN.
Ladder106 is offline   Reply With Quote
Old 08-15-2012, 02:40 AM   #13481
Simosez
Gnarly Adventurer
 
Simosez's Avatar
 
Joined: Oct 2010
Location: eternally sunny lithgow
Oddometer: 386
Ladder, here are the long awaited front guard mount photos.
they are just a bit of 50mm aluminium (spelt correctly) with some heatshrink over the top. i bent them around an appropriately sized pipe. this took a bit of doing to get it to a useable shape.
i used foam sealing tape wrapped around the fork leg to help pad out the fork for a more secure fit.
i drilled holes in the mounts so i could get an allen key onto the bolt.
its not the prettiest thing in the world but it works and cost me less than ten bucks!!


__________________
"Safety Turd. Because the only skid marks should be on the dirt."
"If I could get back all the money I ever spent on dirt bikes, I'd spend it all on dirt bikes."
DR750 BIG
Husaberg 350
Simosez is offline   Reply With Quote
Old 08-15-2012, 03:27 PM   #13482
juss
Adventurer
 
Joined: Sep 2009
Oddometer: 59
Some pics of me and the BIG can be found in Google Maps Street View:






No rear footpegs as there's clearly no room for a passenger. (The pegs make it a PITA to get all the sticky crap off the rear swingarm and shock department. It's all so much easier when they're gone.)



;)

cheers, juss

juss screwed with this post 08-15-2012 at 03:48 PM
juss is offline   Reply With Quote
Old 08-16-2012, 04:18 AM   #13483
Dino3310
Studly Adventurer
 
Joined: Oct 2008
Location: waikato gravel and sand
Oddometer: 673
Hi Guys,

I Got a big hello from 800rider:

"Say hello to Rob and the boys for and we can get some pics to post up there when we catch up "

if anyone wants to catch up to him you can get him on here http://www.kiwibiker.co.nz/forums/sh...post1130378599
Dino3310 is offline   Reply With Quote
Old 08-16-2012, 04:55 AM   #13484
mait
Gnarly Adventurer
 
mait's Avatar
 
Joined: Aug 2009
Location: Tallinn, Estonia
Oddometer: 303
Oil cooler fan any help?

Yesterday evening I happened to ride in a group of experienced enduro and trials riders. We had KTM 690Enduro, 640Adventure and a former pro trials rider on a Yamaha TDM (heavily modified with KTM forks and higher shock etc). The trail was pretty hardcore, we covered only 114kms in 5hours. The hardest section was ca 4kms long including a serious hill-climb and and this section took us 1hour 40minutes. I lost count how many times I laid the bike on its side.

Now to the point. For sure DR Big is not the best bike for this kind of riding. There is almost no cooling while moving walking speeds on first gear, digging in the mud etc. The trailtech engine temp warning lights came on repeatidly and max temperature I noticed later was 187 C (368 F) measured under the spark plug. This is way too much.
I had also trouble finding neutral because the clutch was dragging when the engine became too hot. I am using a German brand Liqui Moly 10W-40 semi-synth oil.


I wonder if oil cooler fan would have helped at least a bit? Have any of you ever thought about it?
Regarding clutch dragging it appears only when overheated. Would a different kind of oil be helpful?

KTMs and TDM didn't seem to have any of my problems. But I just can not see myself trading my Big for a KTM
Although I have to admit I have been watching KTM's for sale on internet recently...
mait is offline   Reply With Quote
Old 08-16-2012, 09:05 AM   #13485
Ladder106
It's a short cut, really
 
Ladder106's Avatar
 
Joined: Jan 2005
Location: Davis, CA
Oddometer: 4,922
Pissed

Certainly any time you are using the bike hard and there is no or little air movement, the heat will go up.

It seems odd that the other bikes weren't hot also. It may be that they just had no indicators providing this level of information

The Dakar bikes (watercooled now) use fans on both radiators for this reason.

A fan certainly would not hurt...but only a trial will tell you how much it will help. It may use a lot of battery reserve and then your problem would be restarting after stalling.

The real question would be:
How often will I ride in this manner?

That should tell you how much time and effort you should expend on solving the overheating problems.

Me, I'd just do an oil change (since you don't really know how broken down your oil is now) and go on riding.
Ladder106 is offline   Reply With Quote
Reply

Share

Thread Tools Search this Thread
Search this Thread:

.
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


Times are GMT -7.   It's 05:36 AM.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ADVrider 2011-2014