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EC250SM project

23K views 30 replies 11 participants last post by  wakeymatt 
#1 ·
Thought I post a pict of my GasGas EC250SM project. It is an 1998
with the 50mm Marzocchi forks. I just reciently installed a 320mm
front rotor and a set of Dunlop K180 dirt track tires on the 21" front
and 19" rear wheels.
It is street platted here in Ca., and a hoot to ride around town.
Next up is some new plastics and a little detailing.
cheers, Jeff So Cal.
I hope this works, not sure how to attach a .pict.
 
#4 ·
Yea, I'd like to see that too.....someday..
$$$ are what is keeping me from doing it.
That and I only have ~100 miles on the new
Dunlop K180s. Gotta wear those out first.
Next project is putting 17s on my 1985 XL350R.
Then putting all the hop-up goodies I've bought
on my Derbi SM. Oh so many bikes and so little time.
Cheers, Jeff
 
#6 ·
*XL350R* They are good bikes for the most part.
They run very hot, not enough area in the fins to
cool it down. Change oil OFTEN!. The cam runs in
aluminium journals in the head. Damage these with
some grit or poor oil and you're SOL.
The twin carbs can be a PIA to tune and are a biach
to remove from the bike.... other than that all's well.
I'll attach a pict of mine.
Jeff, So Cal.
 
#9 ·
I took a couple of updated pictures of my GasGas EC250SM
project.
New plastic and graphics with updated hand guards.

and from the front;

Next on the list.... Whoohoo. I picked up a pair
of stock wheel hubs and some new bearings.
As $$ permit. I am going to have them strung up
with some new 17" rims and sticky tires. Cant' wait.
I'll post an update when I get them installed.
Jeff
 
#11 ·
I'd say the only thing missing to be classified as a
SuperMoto would be the 17" wheels. Would you agree?
I kind of took the liberty to label it a SuMo because of the
Dunlop Dirt Track racing tires.
I would be glad to hear about the rules to qualify a bike
as a true SuMo.
Thanks, Jeff
 
#14 ·
Yea, I used a dremel with a sanding wheel to remove about
.02 - .03 from the clutch master cylinder. Maybe a bit less.
The material is pretty thick right there and removing that
little bit should not be a problem. We'll see with time.
Jeff So. Cal.
 
#15 ·
Bump.
A little update and a new picture or two.
My GF and I took a ride a couple weeks ago
to the Rock Store Cafe in Malibu Ca. I took
the GasGas for it's first ride in the Canyons
since it's transformation to SuperMoto.
I am most pleased with it's performance, :bannana:,
The only minor issue was a little front end chatter
diving into a corner with the front brake on hard.

I think a click or three of the dampner in the right
direction should calm things down.
Here we are @ the Store.

It took a while to complete the project, but, I'd say it was
worth the effort and the cost.
Cheers, Jeff
 
#18 ·
Carvell wrote: "looks Dope"
Thanks.... even more dope is the new
40 tooth rear sprocket I installed yesterday. :bannana:
It is a little slower taking off from a stop light, but,
once it's moving look out. 55mph is a nice smooth cruise.
No way near coming on the power valve like it was before.
Stock gearing was 13/50 I believe. Now I am running a
14/40. A lot better suited for the street now.
I've no idea if it would ever pull 6th gear @ full RPM.:anim_peep:
Im too skared.....:rofl:
Jeff
 
#22 ·
Quick question....will YZ hubs fit the Gasser EC250 ???? as I know some parts on these bikes are from different manufacturers :thumbup:
As I can get a set of SM wheels for a YS on the cheap ;)
 
#23 ·
Hi Debi. I do not know if YZ hubs would fit. You need to measure
the axle diameters of your GasGas and then measure the inside
diameter of the wheel bearing on the YZ hub. You will also need to
measure to overall width of the complete wheel hub assembly.
They will most likely be different and you will have to make custom
spacers to center the wheel in the forks and swingarm.
I am lazy and figured it was easier to use the stock hubs and spacers
than do the engineering to find a usable alternative. "Time is money"
How much do you value your personal time?
Almost anything can be made to work with enough $$ and effort.
Post a 'wanted' add on GasGasRiders.org. You might fine some stock
wheels for a good price. Or you might try CafeHusky. I hear they use
the same hubs. Calling a good GG dealer might be worth every penny.
Good luck.
Jeff
 
#24 ·
TY Jeff.....

I was just hoping they would fit.... if the axles fit than I will be good as I have a riding buddy whom is a Machinist and said he would make up the spacers and relocation bracket as well for beer haha :thumbup:

I just so want to get the Gasser Sumo'd and hit the track with it and see what it does vs the DRZ :bannana:
 
#25 ·
If you have the resource of a good machinist and a bearing catalog you're
golden. I guess most of the after market hub manufacturers use over
size O.D. (outside diameter) bearings. So they can vary the bearing
I.D. (inside diameter) to fit various axle diameters.
Several people are parting out a few GG bikes over on GGRider.org
You might look there for a set of stock wheels. Then you can have a
set of both.
Go for it......................and post some pictures for us.
:thumbup: Jeff
 
#26 ·
Will do on the pics

this is as it sit'sow


and yes it has the full Ohlins suspension on it :anim_peep:

I'm going to see if my DRZ SM wheels will fit :thumbup:
 
#27 ·
Debi wrote: "I'm going to see if my DRZ SM wheels will fit"

CalTony from GGRider.org used a DRZ rear wheel on his GG FSE450.
He said it fit real easy. He also converted a KTM wheel for the front
of his FSE. Do a search on GGRider for more info.
It can be done! :thumbup:
Jeff
 
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