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Old 11-07-2013, 07:41 PM   #61
pvangel OP
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Location: South Salem, NY
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Thanks Andrew!

Work gets in the way of way too many things.....

MOTOR MOUNTS!!!

Used my template to make the permanent front mounts,





Couple of jigsaw blades and they are roughed out,



I used the RM motor mount as a template to drill the new frame holes,



Bolted it together and used my diamond plate template for the motor holes,



After a test fit I had to cut more out of the right one to clear the cases,



Left one was good,



After bolting it in and setting up the laser again I will have to move the motor over about 1/4" for everything to be aligned correctly.
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Old 11-07-2013, 08:43 PM   #62
FJ_Kevin
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Nice job and very interesting project.

I used to race a '79 RM 250, felt like a factory bike to me. Paid $1550 for it new from a shop on long Island. Ran remote Ohlin shocks on it. Broke the frame in two places while running 4th in an AMA regional qualifier (trailway speedway, PA maybe?). I loved that thing. The RM 125's filled the starting line at Bridgehampton in '79.

Keep up the great work, I'll be watching for sure!
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Old 11-08-2013, 03:59 PM   #63
pvangel OP
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Yep, the 79- 80 is a great chassis that is why I chose it.

First part showed up in the mail today, not sure if I will use it but like the look of it!

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Old 11-08-2013, 05:13 PM   #64
pvangel OP
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CUSTOM unobtainable WHITE plastic for the 80 rm 125 and I ain't saying where I got it...


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Old 11-09-2013, 10:42 AM   #65
cedric
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Cool build, thanks for sharing this. Maybe I missed it but what are your plans for the engine?
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Old 11-09-2013, 02:28 PM   #66
pvangel OP
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Cool build, thanks for sharing this. Maybe I missed it but what are your plans for the engine?
I have been researching what is the most bang for the buck with this motor, Powroll which was the company to go to for these while still in business does not return phone calls or emails but I found a guy who is Oregon close to them that does them. He has suggested a stroker motor but I feel I want to keep it close to stock to maintain reliability and easy starting so will probably do his recommended stage 1 mods which would be,
The first step is a decent bump in power.
1. 66mm Wiseco 12-1 piston(listed as atc200)
2. a web cam in midrange area
3. pipe and open up airbox

The pipe will be custom as well as the airbox so I guess HC Piston and cam at this point.



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Old 11-09-2013, 02:30 PM   #67
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Got the seat cover in the mail today, had it made in red. I am waiting for the new tank which I hope fits with the seat, might have jumped the gun ordering it....looks cool though!

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Old 11-09-2013, 05:05 PM   #68
pvangel OP
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Started to get the other motor mounts in place today, I was going to cut the old ones off and re-weld new ones on but thought I should leave 33 year old metal alone and shim motor in place instead.



I will tack weld washers in place once I get all done.





Next I started to cut spacers that I will weld to the motor mounts/ frame.



I have set the laser up and constantly check alignment as I add additional supports and tighten up bolts, so far so good!

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Old 11-09-2013, 06:58 PM   #69
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Started to weld in all the spacers and filler tubes,



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Old 11-09-2013, 07:20 PM   #70
dhallilama
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i dig this... suzuki with a honda motor and yamaha livery... awesome.
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Old 11-09-2013, 08:32 PM   #71
villageidiot
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gotta go stroker....... theres no replacement for the grunt it provides.

id go stroker, high comp piston, and a good midrange cam.

but keeping the stroke stock is certainly cheaper. if they use an offset crank pin to stroke it and youre going to do rod bearing on the big end anyways, it might not be too much more for the pin and the crank re true.
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Old 11-09-2013, 10:05 PM   #72
BROTOWNBOY
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Thumb

[IMG][/IMG]

Here's a CR250 with XR500 motor I had years ago for a bit of inspiration maybe
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Old 11-10-2013, 06:43 AM   #73
pvangel OP
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Originally Posted by villageidiot View Post
gotta go stroker....... theres no replacement for the grunt it provides.

id go stroker, high comp piston, and a good midrange cam.

but keeping the stroke stock is certainly cheaper. if they use an offset crank pin to stroke it and youre going to do rod bearing on the big end anyways, it might not be too much more for the pin and the crank re true.

I agree a stroker is the way to go but it will be over a grand into the motor to do it, about 1/2 that for a 63 mm piston and webb cam.....trying to keep on budget I have to see how much I spend on $hock$. Which leads me to the next pic.
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Old 11-10-2013, 06:46 AM   #74
pvangel OP
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Originally Posted by BROTOWNBOY View Post
[IMG][/IMG]

Here's a CR250 with XR500 motor I had years ago for a bit of inspiration maybe

Very cool!, Love the Fox Airs I am on the hunt for a pair for this bike but no luck yet.

I had found a 1980 RM 125 in a basement very close to me that had Fox airs, Simons forks, DG head etc that I bought for a couple hundred and parted out for a lot more than that.....could have used those parts now!
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Old 11-10-2013, 12:02 PM   #75
nachtflug
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Quote:
Originally Posted by pvangel View Post

I had found a 1980 RM 125 in a basement very close to me that had Fox airs, Simons forks, DG head etc that I bought for a couple hundred and parted out for a lot more than that.....could have used those parts now!
http://www.youtube.com/watch?v=9GLJOjRBomw
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