Cut and shut steering stem, safe or not ?

[suzook12]

On 14/11/2017 at 7:46 PM, Captain Chaos said:

it's too short for a bandit frame

When did that happen? Fitted many slingy front ends straight in to B12s or is this a mk2 issue?

[Captain Chaos]

Never had a B12 stem in my hands but I read everywhere that it's longer than a Slingy one.

I could be wrong of course

[fatblokeonbandit]

5 hours ago, suzook12 said:

When did that happen? Fitted many slingy front end staight in to B12s or is this a mk2 issue?

Not with a slingy stem you didnt, the bandit 6 and 1200 stems are about 20mm longefR Than a slingy one ,  i have sevseal of both in the shed i can measure. All of the 20 or so usd slingy front ends ive fitted to bandits have had stem change

[fatblokeonbandit]

slingshot on the left bandit on the right

 

[nlovien]

agreed ref: load - its not the rotation - its getting the bearings to seat common to each other - if the c/l is off there will be a tendency to force a small twist - not an issue ref: stem but will be one ref: the feel of the steering

[vizman]

most people* only check their tyre pressures once a year so getting stuff within a 'thou' is pish.

 

 

*i'm kidding

[nlovien]

its a good point vizman - basically horses for courses - each and every build has its purpose and use - what can add value to one can be wasted effort on another - key point is to not apply the wrong approach to meet the purpose 

[Gammaboy]

13 hours ago, nlovien said:

agreed ref: load - its not the rotation - its getting the bearings to seat common to each other - if the c/l is off there will be a tendency to force a small twist - not an issue ref: stem but will be one ref: the feel of the steering

Do you really think the upper and lower bearing seats in the frame are within a thou of each other?

[clivegto]

9 hours ago, Gammaboy said:

Do you really think the upper and lower bearing seats in the frame are within a thou of each other?

That's a very good point. No I would have thought not at all.

[Swirl]

Why even bother with a cut and shut, just replace it with a longer stem easy peasy

[vizman]

7 minutes ago, Swirl said:

Why even bother with a cut and shut, just replace it with a longer stem easy peasy

sometimes needs must.....

 

[nlovien]

11 hours ago, Gammaboy said:

Do you really think the upper and lower bearing seats in the frame are within a thou of each other?

don't know what the actual acceptable tolerance is - aligning two bearings without any side load binding does need an accurate alignment - no issues though - cut n patch-  you just run the stem  up on the lathe - tack n tap - job done -  principle remains - is this an option - yip but keep a canny eye on it for straightness 

[Reddragon]

24 minutes ago, Swirl said:

Why even bother with a cut and shut, just replace it with a longer stem easy peasy

Its on its way to fat bloke for a stem swap 

[fatblokeonbandit]

On 15/11/2017 at 2:25 PM, Swiss Toni said:

You'll find it'll take at least 10 tons of pressure to get it out! Not surprised your vice surrendered! 

6 ton actually and 4 to press the bandit one in

[Madb]

hmmmm, stepped bottom yoke.  that would come in usefull with a stepped top yoke 54/50mm. hee hee