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Author Topic: Not another bloody SR250?  (Read 3291 times)

Offline ManxKat

  • Posts: 25
  • Older but no wiser
Not another bloody SR250?
« on: Apr 18, 2016, 08:40:18 »
'fraid so.

New to DTT but no stranger to hacking about perfectly serviceable bikes so here's the latest victim for surgery.

Plan is vague at the moment but as:

i) this will be a loaner for visiting friends,
ii) my normal work rate is that of an arthritic snail, and
iii) it doesn't need to be any faster than it is

changes should be (ha!) limited to:

i) sourcing a less ridiculous seat (hello Jadus!),
ii) lowering the tank (hello Jadus again),
iii) fitting a louder pipe,
iv) fitting less ridiculous bars (actually I've already done that one),
v) knocking up some side panels that fill the gap caused by i),
vi) lowering the front end,
vii) fitting a headlight unit which contains the speedo/ idiot light etc., and
viii) trawling Yamaha parts list to see if the twin pot front caliper and fork leg fitted to the very last SR250s (mine's apparently a 1993 model) can be retrofitted.

So far I've confirmed that it's 100% operational, and most of the original 20 horse powers are still present, so there are no mechanical changes planned for the engine - yet.

If anyone knows the answer to viii) above that would be handy otherwise I'll leave you in peace for now.   
GRAMMAR
The difference between knowing your sh*t and knowing you're sh*t

Offline zap2504

  • Posts: 344
Re: Not another bloody SR250?
« Reply #1 on: Apr 27, 2016, 20:28:40 »
I had heard that the entire front end from a XV250 Virago will fit with an All Balls bearing kit.

Offline ManxKat

  • Posts: 25
  • Older but no wiser
Re: Not another bloody SR250?
« Reply #2 on: Apr 28, 2016, 09:31:49 »
Thanks for the input. XV250s are rare beasts in my neck of the woods but it's certainly another option to consider - I'm planning on running a tape measure over an SR125 and a Honda CB250RS in the near future to see what forks/ brakes might fit with minimum fuss.
GRAMMAR
The difference between knowing your sh*t and knowing you're sh*t

Offline unclerob

  • Posts: 132
Re: Not another bloody SR250?
« Reply #3 on: Apr 28, 2016, 15:27:17 »
Was just looking at the pic of your bike, specially the shape of the frame and side panel and had a thought.....Royal Enfield Crusader Sport replica!

Offline ManxKat

  • Posts: 25
  • Older but no wiser
Re: Not another bloody SR250?
« Reply #4 on: Apr 29, 2016, 06:59:24 »
There's definitely a similarity there but, for reasons best known to Yamaha, the SR's top frame rail is actually horizontal (or pretty close to it). The side panel is that shape because it has to match the curve in the seat so, once the seat gets replaced (Lordy, it is so uncomfortable), there'll be a gap to fill between the bottom of the seat and the top edge of the side panel. Plans are afoot to fabricate new side panels (or modify the stock items) to resolve this.   
GRAMMAR
The difference between knowing your sh*t and knowing you're sh*t

Offline zap2504

  • Posts: 344
Re: Not another bloody SR250?
« Reply #5 on: Apr 29, 2016, 15:25:54 »
Plans are afoot to fabricate new side panels (or modify the stock items) to resolve this.
Before you fabricate either a seat or side panels, check out what Jadus has done in a similar build here. http://www.dotheton.com/forum/index.php?topic=66505.0

Offline cosworth

  • Posts: 561
Re: Not another bloody SR250?
« Reply #6 on: Apr 29, 2016, 18:27:43 »
I'd like to find an xv250 front end now....
1981 SR250 café hot rod (sold)
1976 XS360 collector plates
1980 XS400 (on the bench)
1981 XS400 (in pieces)
2017 Husqvarna 701 enduro
Livin' the dream in western Canuckistan

Offline zap2504

  • Posts: 344
Re: Not another bloody SR250?
« Reply #7 on: Apr 29, 2016, 19:09:42 »
All Balls sells a huge variety of bearing kits for all sorts of other front end conversions:
http://www.allballsracing.com/index.php/forkconversion

You should be able to find a different front end that was plentiful in your area, had a compatible front wheel and disk brake.

Offline cosworth

  • Posts: 561
Re: Not another bloody SR250?
« Reply #8 on: Apr 30, 2016, 00:51:12 »
According to allballs cross reference, the bearings top and bottom are the same. Should just bolt on. Xv250 front end that is.
1981 SR250 café hot rod (sold)
1976 XS360 collector plates
1980 XS400 (on the bench)
1981 XS400 (in pieces)
2017 Husqvarna 701 enduro
Livin' the dream in western Canuckistan

Offline ManxKat

  • Posts: 25
  • Older but no wiser
Re: Not another bloody SR250?
« Reply #9 on: May 01, 2016, 18:23:02 »
Thanks for the leads chaps, the search extends ever outwards! I've been chatting to Jadus and a seat will be winging its way to me shortly, I hope.

A rainy day has meant some garage time with the SR and the first steps have been taken - but for some reason I can't get any photos to load at the moment. As soon as that minor technical issue is resolved I will bore you rigid with lowering the forks, lowering the front mudguard, lowering the ignition barrel and modifying the battery box (among other stuff). The photos are great, really.
« Last Edit: May 02, 2016, 11:25:25 by ManxKat »
GRAMMAR
The difference between knowing your sh*t and knowing you're sh*t