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Messages - SumpMagnet
16
« on: September 22, 2023, 06:11:46 PM »
Been struggling off and on to find time to finish my 750F2 ..... and doing a load of stuff to my daily ride....and then, well..I got made an offer I couldn't refuse. this is basivcally a family heirloom. My father bought it some 45 years ago, slowly brought it back to standard, then it got mothballed for a bit, partially pulled apart, then sort of left. He was busy renovating other folks bikes, and she got a little neglected. I was asked to give it a new home....and had to say yes. Comes with some issues, needs cosmetics and most seriously...the distributor had been popping out, which was traced to ovalling of the crankcase opening where it sits. I have a spare set of cases, and a 500 head and barrel ( +20...but needs a rebore) Plus an assortment of other bits and pieces. 2 sets of exhausts, electrical goodies....3 boxes full! So now I got that to play with as well! For the record, she's a 1959 Triumph 3TA The 500 top end is a straight swap, which is why I think Dad bought it. Gives a useful increase in performance. Paint has a number of issues, but from a distance away...it looks pretty. And it's complete. Nearly. https://i.imgur.com/hHkzd6K.jpg
17
« on: September 09, 2023, 11:33:55 AM »
For an area of high heat like an exhaust port, I'd go Timesert over Helicoil.
I have had helicoils 'unwind' themselves due to the differential expansion comared to the alloy head. More hassle than a Helicoil....but worth it in the long run
18
« on: July 18, 2023, 10:22:33 PM »
I really like it.
Not one for the purists, but I like it.
Not a clue what is going on with the tape, as the throttle wasn't moving as it should when he tried to open it. Just bizarre.
19
« on: July 15, 2023, 06:52:16 PM »
I don;t think the bike in the pic is an accurate representation of anything...more an artists rendering.
The early Indians used girder type forks with a leaf spring before swapping to teles. The pic looks like a springer front end. Either that or it's a custom build.
I think it's a convenience thing to get rid of the bathtub. That and to make the TwentyOne look like a Bonnie...if you drank enough. I know how long my dad hunted for a decent pair of bathtubs for his. In the end he got a decently matching pair, bought from 2 different stalls at the Bath & West show.
20
« on: July 07, 2023, 04:58:57 PM »
Nearly 3 grand.....
Love the description of a 2007 bike as being actually able to start and run. Damn well should do. Passed my test in the mod 80's and considered a 10 year old bike as nearly new. This was the sort of stock you would see down the local backstreet dealer and being used by ordinary folk who couldn't afford finance.
£1500 sounds spot on for a daily commuter.
21
« on: May 11, 2023, 08:32:28 PM »
He would have grown up an orphan ..... his father lost him at an early age
22
« on: April 26, 2023, 07:14:35 PM »
https://www.ebay.co.uk/itm/275817767179Idly mooching through E-Bay on my lunch break, looking for those bits I just can;t seem to find, and got distracted looking at whats cheap and I ran across this.... did a double take .... spent the rest of my lunch wondering WHY!
23
« on: April 09, 2023, 09:42:53 PM »
24
« on: April 09, 2023, 08:14:18 PM »
going to try a litre of Synstryp.
Will order it from work on Tuesday, as I know some suppliers get funny about who they sell to.
25
« on: April 09, 2023, 06:09:45 PM »
OK .... can anyone give me a source of the mythical 'paint stripper' .....a chemical you used to paint on and it would make the paint fall off.
Not the stuff you can buy these days, that barely softens the stuff..... the real deal Methylene chloride and all!
I have a mudguard I am trying to strip. It's got rust around the edges, and flaked paint...but after a day of stripper soaking, all it has done is take the clear coat off. A second application almost got bits of it down to base coat, but nowhere has it actually got the surface anywhere near metal where paint actually adhered.
Need the good stuff! The stuff you actually NEED to wear gloves for, and cover exposed skin. Not the stuff you could mix with lemonade and still drink without ill effect ( well...not...but its weak as gnats urine!)
26
« on: April 06, 2023, 08:41:00 PM »
so they actually build in the battery charger into the pack. The bike just provides an input voltage. I did wonder, as I am very used to using high power LiPo packs for RC cars, but to charge them corectly, you need to use a balance charger able to actually balance the cells as the charge progresses, with low volt protection and opvercharging safeties built in.
Also, the linked pack is using LiFe ( Lithium Ferrite ) which ahs a lower voltage per cell nominally, which isn;t an issue in this application.
The benefit should be better starting, more consistent performance...and a longer life. Just DO NOT let the voltage drop too low as lithium polymer packs are very intolerant of over-discharging. Perfect for a bike thats used daily, but in need of care if it's not.
27
« on: March 09, 2023, 01:06:09 PM »
So, I am guessing he is not a fan of French engineering standards.......
29
« on: February 19, 2023, 07:34:08 PM »
 thanks for the link! Will give some of this a go and see how I get on.
30
« on: February 18, 2023, 11:30:32 AM »
Fascinating!!
Where do you get your PU rubber stuff from? I have been contemplating trying something similar for an unrelated application making tyres for an RC tank project ....
I can make the 3d printed mould quite easily. I assume the compound just gets poured into the lower mould, and the top clamped down, with some vent holes to let the excess out, and to pressurise the mould to get any air bubbles out. Would potentially also allow me to 3D print the wheels first...put hte wheels in the mould, and cast tyres around them to 'key' them in.
I tried making footrest rubbers once in a plaster mould. The stuff I had to mould with was horrid, and the results fit only for the bin. Never thought to 3D print a mould. Obvious when someone else does it......
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