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Tom Borcherdt new LSR record #561765
09/04/14 10:23 pm
09/04/14 10:23 pm
Joined: Oct 2001
Posts: 541
Howard City, MI
E
Ed V Offline OP

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Ed V  Offline OP

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Joined: Oct 2001
Posts: 541
Howard City, MI
Congratulations are in order for Tom Borcherdt after setting a new record of 149 MPH and change in the 650 push rod gas class with his BSA B50. Tom ran just over 150 on his first pass and backed it up with a 149 and change,he was hoping for a 150 record so maybe next year.
Good going Tom!

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Re: Tom Borcherdt new LSR record [Re: Ed V] #561776
09/04/14 11:18 pm
09/04/14 11:18 pm
Joined: Nov 2005
Posts: 758
Riverside, CA.
N
noisy norton Offline
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Joined: Nov 2005
Posts: 758
Riverside, CA.
I saw that on another forum. A huge congratulations!!! is in order!!!


God rides a Triumph but wishes it was a Norton.
Re: Tom Borcherdt new LSR record [Re: Ed V] #561808
09/05/14 6:41 am
09/05/14 6:41 am
Joined: Sep 2008
Posts: 785
Edgewater, Md
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Blown Income Offline

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Joined: Sep 2008
Posts: 785
Edgewater, Md
Thats awesome!!! 149mph is flying on a B50.


1955 BSA Bantam D1 Plunger
1956 BSA A10RR Street and LSR Bike
1961 BSA C15S
1966 BSA spitfire
1969 Triumph T100C
1970 Triumph TR6R
1972 BSA Lightning LSR Bike
1974 Triumph T150V
Re: Tom Borcherdt new LSR record [Re: Blown Income] #561843
09/05/14 11:00 am
09/05/14 11:00 am
Joined: Oct 2005
Posts: 208
North Carolina
D
DKA Offline
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DKA  Offline
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Joined: Oct 2005
Posts: 208
North Carolina
It is an awesome feat, especially when power is down 15% at Bonneville!
Here is a link to his build.

http://www.landracing.com/forum/index.php/topic,9341.0.html

A very interesting and informative read.

Last edited by DKA; 09/05/14 11:01 am.
Re: Tom Borcherdt new LSR record [Re: DKA] #561861
09/05/14 1:05 pm
09/05/14 1:05 pm
Joined: Oct 2012
Posts: 3,632
Running from demons in WNY
Hillbilly bike Offline
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Hillbilly bike  Offline
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Posts: 3,632
Running from demons in WNY
That bike is finely engineered.. B 50


650 Triumph modified production LSR record holder 133.1 MPH... Twin 650 engine Triumph LSR that goes sorta fast...
Re: Tom Borcherdt new LSR record [Re: Ed V] #561862
09/05/14 1:06 pm
09/05/14 1:06 pm
Joined: Aug 2001
Posts: 403
Iowa
konon Offline

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konon  Offline

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Posts: 403
Iowa
Followed his build thread, wonder how heavy his bike (frame) is.


1968 BSA Firebird
1200 HD
XS 1100
1972 Rickman 125
Re: Tom Borcherdt new LSR record [Re: Ed V] #561903
09/05/14 5:53 pm
09/05/14 5:53 pm
Joined: Nov 2005
Posts: 758
Riverside, CA.
N
noisy norton Offline
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noisy norton  Offline
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Posts: 758
Riverside, CA.
Konon, Weight doesn't really matter at Bonneville. For some its a benefit. The really big HP bikes add weight for traction.


God rides a Triumph but wishes it was a Norton.
Re: Tom Borcherdt new LSR record [Re: Ed V] #561911
09/05/14 6:46 pm
09/05/14 6:46 pm
Joined: Aug 2001
Posts: 403
Iowa
konon Offline

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konon  Offline

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Joined: Aug 2001
Posts: 403
Iowa
At 150 MPH, quess it had no effect. Congratulations.


1968 BSA Firebird
1200 HD
XS 1100
1972 Rickman 125
Re: Tom Borcherdt new LSR record [Re: konon] #561916
09/05/14 7:29 pm
09/05/14 7:29 pm
Joined: Nov 2011
Posts: 178
Nova Scotia, Canada
K
koncretekid Offline
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Posts: 178
Nova Scotia, Canada
Thanks for the comments. Frame is rigid rear made of 1" x .062" chrome-moly and weighs about 55lbs. The bodywork weighs about the same, and the total weight is around 400 lbs. Most people say that weight doesn't matter at Bonneville, but I would say start out as light as possible and add weight where you need it. I have 2 miles to get up to speed, but I know from the flying kilometer speed (center of the timed mile) that I am stll accelerating at the end of the timed mile. If I could use the kilometer speeds, my new record would be 150mph.

Alp got the 650 A-PG (open bike) record at around 133 mph with his new untested motor, and he told me he never got out of 3rd gear on the return run! Kind of like the "Little Nash Rambler" song.

Tom


Life's uncertain - go fast now!
Re: Tom Borcherdt new LSR record [Re: koncretekid] #561970
09/06/14 6:27 am
09/06/14 6:27 am
Joined: Oct 2012
Posts: 3,632
Running from demons in WNY
Hillbilly bike Offline
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Hillbilly bike  Offline
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Posts: 3,632
Running from demons in WNY
Alp said the traction was poor and his engine(Triumph 650 pre unit) was spinning 8500 rpm..
Do you Salt guys gear the bike for a faster speed than what you expect to run?


650 Triumph modified production LSR record holder 133.1 MPH... Twin 650 engine Triumph LSR that goes sorta fast...
Re: Tom Borcherdt new LSR record [Re: Hillbilly bike] #562076
09/06/14 7:46 pm
09/06/14 7:46 pm
Joined: Nov 2011
Posts: 178
Nova Scotia, Canada
K
koncretekid Offline
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Joined: Nov 2011
Posts: 178
Nova Scotia, Canada
"Do you Salt guys gear the bike for a faster speed than what you expect to run? "

My bike was geared for 152 mph at 7200 RPM with 4% slippage. New motor and I knew 7200 was safe. If I had dyno data for the new motor, I would gear it for my target speed at it's peak hp.

Tom


Life's uncertain - go fast now!
Re: Tom Borcherdt new LSR record [Re: koncretekid] #562149
09/07/14 8:37 am
09/07/14 8:37 am
Joined: Oct 2012
Posts: 3,632
Running from demons in WNY
Hillbilly bike Offline
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Hillbilly bike  Offline
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Posts: 3,632
Running from demons in WNY
You have interest in running on pavement at Loring Maine or Wilmington Ohio?


650 Triumph modified production LSR record holder 133.1 MPH... Twin 650 engine Triumph LSR that goes sorta fast...
Re: Tom Borcherdt new LSR record [Re: Hillbilly bike] #562243
09/07/14 9:42 pm
09/07/14 9:42 pm
Joined: Nov 2011
Posts: 178
Nova Scotia, Canada
K
koncretekid Offline
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Posts: 178
Nova Scotia, Canada
I have been running Loring for 4 years now. In July, I ran the new motor for the first time in the Open bike class and ran 130 mph.


Life's uncertain - go fast now!
Re: Tom Borcherdt new LSR record [Re: Hillbilly bike] #562335
09/08/14 3:45 pm
09/08/14 3:45 pm
Joined: May 2013
Posts: 4,839
Rotherham - S. Yorkshire
Allan Gill Offline

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Happy Birthday Allan Gill  Offline

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Joined: May 2013
Posts: 4,839
Rotherham - S. Yorkshire
Originally Posted By: Hillbilly bike
You have interest in running on pavement at Loring Maine or Wilmington Ohio?


I would think the set up of a bike used for several miles on the salt to be a lot different than the shorter Tarmac which you race on. The shorter circuit would ( in my view) depend a lot on acceleration, the salt would depend more on torque which will pull higher gearing, I would think too much acceleration would put you on your ass.

All these different disciplines of racing are very interesting to me.


beerchug
Re: Tom Borcherdt new LSR record [Re: Allan Gill] #562401
09/09/14 7:16 am
09/09/14 7:16 am
Joined: Oct 2012
Posts: 3,632
Running from demons in WNY
Hillbilly bike Offline
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Hillbilly bike  Offline
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Joined: Oct 2012
Posts: 3,632
Running from demons in WNY
Tarmac? Wilmington is coarse concrete grin I've talked to bike and car racers who do both paved tracks and non paved like Bonneville and El Mirage. They mentioned gearing and jetting for changes.But a lot of racers have the time honored tradition of only saying one more thing that they think you already know... Generally,the longer run on the salt gives gives higher speed potential, and less traction....If the salt is rough that adds a thrill grin


650 Triumph modified production LSR record holder 133.1 MPH... Twin 650 engine Triumph LSR that goes sorta fast...

Moderated by  Allan Gill 


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