Today @ SPORTAX Racing

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Minter
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Joined: Sun May 30, 2010 7:42 pm
Location: Burlington , Shropshire

Re: Today @ SPORTAX Racing

Post by Minter » Fri Nov 08, 2019 4:34 pm

Busy day yesterday stripping the bottom end of the old Gulf War MT500 bottom end for vapour blasting.

Also finished all the electrics and charging system on the Armstrong.

Today saw the KTM Rotax collected and tested around the track and the next batch of 675 and 555 cylinders ready to be worked on next week.

Finished the week off with a 'Tidy Friday' around the workshop! Might get chance to work on some of my own motors over the weekend!

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SPORTAX Racing ROTAX
http://www.sportaxracing.co.uk
MTRC Shopkeeper
http://sportaxracing.co.uk/product-category/mtrc-shop/
Manuals & Technical Publications on above MTRC shop link

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Minter
Posts: 4923
Joined: Sun May 30, 2010 7:42 pm
Location: Burlington , Shropshire

Re: Today @ SPORTAX Racing

Post by Minter » Mon Nov 11, 2019 7:08 pm

Today has been mainly about phone calls! Lots of incoming phone calls! Unfortunately not from the chap who booked in with us to sort out his poor starting Armstrong! Never mind he must have got it sorted!

Instead I managed to drop off all the cylinders for engineering and engine cases for vapour blasting.

Yesterday I put together most of the TTR150 motor for next year's DTRA modified Minibike class I want to ride in! Just the head to fit when it's finished being made special!

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SPORTAX Racing ROTAX
http://www.sportaxracing.co.uk
MTRC Shopkeeper
http://sportaxracing.co.uk/product-category/mtrc-shop/
Manuals & Technical Publications on above MTRC shop link

Wirralman
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Joined: Fri Jan 16, 2009 9:45 am
Location: Wirral, Merseyside

Re: Today @ SPORTAX Racing

Post by Wirralman » Mon Nov 11, 2019 8:43 pm

Modified mini-bike racing ! Another challenge for Sportax Racing, whatever next ?
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Minter
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Joined: Sun May 30, 2010 7:42 pm
Location: Burlington , Shropshire

Re: Today @ SPORTAX Racing

Post by Minter » Wed Nov 13, 2019 8:02 pm

Yesterday was about failed main bearings and egg shaped bearing seats.

Today has been mostly about 504e engines that make funny noises.. might have something to do with the lack of an oil flinger to lubricate the big end and worn out bearings. Soon be as good as new!

The Dakar bike has made an appearance for its final fix of brakes and electrics!

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4 x
SPORTAX Racing ROTAX
http://www.sportaxracing.co.uk
MTRC Shopkeeper
http://sportaxracing.co.uk/product-category/mtrc-shop/
Manuals & Technical Publications on above MTRC shop link

NeilM
Posts: 54
Joined: Sat Dec 01, 2018 7:34 am
Location: North Somerset

Re: Today @ SPORTAX Racing

Post by NeilM » Wed Nov 13, 2019 10:11 pm

Gawd, that crank looks a mess, how do you fix something like that?

I do like the Dakar bike, it looks great.
1 x

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Minter
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Joined: Sun May 30, 2010 7:42 pm
Location: Burlington , Shropshire

Re: Today @ SPORTAX Racing

Post by Minter » Wed Nov 13, 2019 10:37 pm

NeilM wrote: ↑
Wed Nov 13, 2019 10:11 pm
Gawd, that crank looks a mess, how do you fix something like that?

I do like the Dakar bike, it looks great.
Thanks Neil, the crank will have to be replaced. The rod and left hand web can be salvaged though.
0 x
SPORTAX Racing ROTAX
http://www.sportaxracing.co.uk
MTRC Shopkeeper
http://sportaxracing.co.uk/product-category/mtrc-shop/
Manuals & Technical Publications on above MTRC shop link

NeilM
Posts: 54
Joined: Sat Dec 01, 2018 7:34 am
Location: North Somerset

Re: Today @ SPORTAX Racing

Post by NeilM » Thu Nov 14, 2019 8:26 am

Minter wrote: ↑
Wed Nov 13, 2019 10:37 pm
Thanks Neil, the crank will have to be replaced. The rod and left hand web can be salvaged though.
I thought, given the availability of parts, replacement might be the way.

Years ago you could get cranks, cams, gearbox lay and mainshafts etc repaired by spraying metal onto them (was it called plasma spraying? Something like that) and then re machining, it worked but it was expensive. I think there was a place not too far from me that used to do it.
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Minter
Posts: 4923
Joined: Sun May 30, 2010 7:42 pm
Location: Burlington , Shropshire

Re: Today @ SPORTAX Racing

Post by Minter » Thu Nov 14, 2019 4:28 pm

Today has been mainly about brakes! Harley Davidson Rotax MT604 Dakar brakes!

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3 x
SPORTAX Racing ROTAX
http://www.sportaxracing.co.uk
MTRC Shopkeeper
http://sportaxracing.co.uk/product-category/mtrc-shop/
Manuals & Technical Publications on above MTRC shop link

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landy man
Posts: 98
Joined: Mon Jun 22, 2015 8:49 pm
Location: West Sussex

Re: Today @ SPORTAX Racing

Post by landy man » Thu Nov 14, 2019 10:28 pm

NeilM wrote: ↑
Thu Nov 14, 2019 8:26 am
Minter wrote: ↑
Wed Nov 13, 2019 10:37 pm
Thanks Neil, the crank will have to be replaced. The rod and left hand web can be salvaged though.
I thought, given the availability of parts, replacement might be the way.

Years ago you could get cranks, cams, gearbox lay and mainshafts etc repaired by spraying metal onto them (was it called plasma spraying? Something like that) and then re machining, it worked but it was expensive. I think there was a place not too far from me that used to do it.
https://www.ep-coatings.com/processes/plasma-spraying/

Our company use to do quiet a few surface reclaimes.Very expensive and time consuming.
We have even done bronze cannons.
2 x
1985 MT500 Green...07 KE 57.
1972 series 3 Lightweight,GS,Green.Waddington strike command
1978 Series 3 Lightweight,GS,light stone.Black watch 1st battalion
1959 Triumph 5TA speed twin.
1964 series 2A landy.

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sparky
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Location: lancashire

Re: Today @ SPORTAX Racing

Post by sparky » Fri Nov 15, 2019 10:01 am

Love this thread. Thanks for posting, it's always interesting. You've revived the forum, it was getting a bit tired!
Cheers Dave.
2 x
1994 MT350
1960 AJS model 20
1960 Matchless 650 CSR
1999 BMW F650ST
Honda XBR500

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