CRM's ever growing 2 stroke collection +1 CRM250AR

[tanuki]

Nomnomnom love it....

[jim157]

Very nice, always fancied a CRM after seeing one for the first time at BAT in the early 90's.
Arent the AR's supposed to be a bit troublesome though and expensive to fix if they go wrong?

[CRM]

the AR system is simple, but the CDI isnt. problem with all CRM's are as follows
poor kill switch contacts - missfires
poor side stand contacts - missfires
loom by its positioning absorbs water when used off road and sunk in a bog, as such the loom traps water and rots causing PGM failures and all sorts of issues.
ballancer shaft bearings can go causing a rumble from the botton end a bit like knackered mains.

none of the above happen on a road only bike, only well used off road bikes which havn't been cared for (so thats most then)

but 40 bhp, linear curve, 7900 rpm redline = one very tough and reliable motor and still capable of sitting at 80 all day long on the motorway and will do a ton up top

[jim157]

^^^
Ah right. I used to peruse the CRM forum a few years ago (didn't know it was your site at the time), a lot of the talk on there was that the mk3 was generally seen as being the best (read most reliable) but as you say bikes that are ridden off road are always going to be subjected to more abuse and need more maintenance.

I think a supermoto'd CRM would be great on the road, looking forward to see this one progress.

Whilst on the subject, have you had any experience of RMX250's? They seem to be well liked by a lot of people.

[marcus57]

^^^
Ah right. I used to peruse the CRM forum a few years ago (didn't know it was your site at the time), a lot of the talk on there was that the mk3 was generally seen as being the best (read most reliable) but as you say bikes that are ridden off road are always going to be subjected to more abuse and need more maintenance.

I think a supermoto'd CRM would be great on the road, looking forward to see this one progress.

Whilst on the subject, have you had any experience of RMX250's? They seem to be well liked by a lot of people.

my old man had a rmx 250 for a few years, altough i dont know much about them in general i do know that his was very robust and had a hard life but with regular servicing ect ect never seen him wrong.

[jim157]

^^^
Yeah, I've heard they are very reliable (for a Suzuki!) but have a few issues with the powervalves. I believe they're supposed to be a bit more highly strung than a CRM as they're quite closely based on the RM250?

[CRM]

couple of the guys who used to come out with us had RMX's, there were 2 versions albeit almost the same. engines were fragile compared to the CRM, but they coped with offroad much much better. not much use on the road through with a peaky engine and you never trusted it when pinned flat out.
for the odd enduro and some road use = CRM
for pure offroad but need to be legal for byways = RMX
but the RMX will cost more to maintain and some parts are bespoke to the RMX and can be hard to source.

[Neosophist]

couple of the guys who used to come out with us had RMX's, there were 2 versions albeit almost the same. engines were fragile compared to the CRM, but they coped with offroad much much better. not much use on the road through with a peaky engine and you never trusted it when pinned flat out.
for the odd enduro and some road use = CRM
for pure offroad but need to be legal for byways = RMX
but the RMX will cost more to maintain and some parts are bespoke to the RMX and can be hard to source.

Not really sure of the differences as i'm not really upto much on the motorcrossers but a friend in the UK has a 2001 CR250 that is awesomely fun to run.

'only' 44bhp I think but it pulls like a train and wheelies crazily :D

Plus being a single cylinder there easy to work on, replaced the piston, top end and a load of other crap in no time :D

[Variablevalves suck]

Ive looked at the rear master of the CRM and think it would be a real nice mod on a tricked out road bike, can you post up some mount sizes? its correct they run no fluid pot (part of the master cylinder) so should keep everything nice and neat.

[CRM]

Ive looked at the rear master of the CRM and think it would be a real nice mod on a tricked out road bike, can you post up some mount sizes? its correct they run no fluid pot (part of the master cylinder) so should keep everything nice and neat.

Sorry this took me so long pal
50mm between bolt holes
hope that helps