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Narrowing swingarm

  • Thread starter Thread starter spots25
  • Start date Start date
S

spots25

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I need to narrow the the 1100 Katana swingarm I got so it will fit in my GS400 frame. I like the method done here: (#3)

http://www.fjmods.btinternet.co.uk/MarcRittner.htm

my question, is how did he make this tool?

3aCutterBearingPilotA.jpg


what is that little cutting head?
 
Wish I had answers for your questions on HOW to do it.

My question to you would be WHY to do it? Seems like an awful lot of work to fit the Katana arm in the 400. Hopefully you don't then expect the 400 to handle like a Katana.


.
 
be warned...it seems like 400's are a rarity...i know of only 10...keep it stock...fix it up!
 
lord1234 said:
be warned...it seems like 400's are a rarity...i know of only 10...keep it stock...fix it up!

I've seen a bunch of them. Plus, I don't really have to modify much to fit the swingarm, virtually everything I"m doing will be reversable. Also, the GS already handles better than a Katana, save for the awful tire choices available
 
Dink said:
The cutter shown was custom made.
Dink

yes, but out of what?

Although, I think I got an idea of how to do it... Do you think a router will mill aluminum?
 
I would love to see how you converted the front wheel to disc...if you could do a write up that would be sweet as I would like to do it sometime...
 
My advice is to go to a pedal bike shop and ask them if they have a head tube reamer. A shop that deals with high quality road bikes is most likely to have one. Then show them what you have and what needs to be done. I'll bet the cutter itself on the tool that guy made is at least $70, if not $170.

The real issue is how are you going to cut the races for the swingarm bearing?
 
Jethro said:
The real issue is how are you going to cut the races for the swingarm bearing?

it looks like they're drilled straight all the way across. All I should have to do is press the bearings further into the swingarm. Obviously I"ll be replacing them, and I'll need to cut down that spacer tube in the middle too.

Head tube reamer you say?
 
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