B44 MX Motor

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Re: B44 MX Motor

Post by beat » Mon Apr 16, 2018 8:43 pm

Radman wrote:We should note the motors application: Off-Road MX and Cross Country racing so sustained high rpm runs like road racing or highway drones are unlikely. Lots of rev changes up and down as well as motion accel and braking...
this is ONE reason why the the mod ( lubbing rockers from feed pump ) is working.

the SECOND reason can be: the point, taking off the line to the rocker box is set just AFTER THE PUMP and BEVORE THE PRESSURE NON RETURN VALVE.
if so, the springloadet valve is holding a surtain pressure at the pump, ergo at the line to the rockers.
but it depends hardly by the spring length for the ball.

the line wich has NO pressure by higher revs is between the non return valve and the flywheel!

this is why I use a
DSCN0760.jpg
adjustable non return valve
DSCN0780.jpg
easy to reach and to adjust pressure
a Oil Pressure Gauge is showing me continuously the press the pump is doing.

since a shorter wile I do run a line from just after the feed pump up to the rockers.
Oil Press: cold : 2.5 bar, - hot: 0.5 bar.
( cold 2.5 bar because my self-made pressure relief valve opens at this point )

the reason for it is NOT the amount of oil going to the valve train, NO, - it is the difference in temperature of the oil.
the oil from the feed pump is average 15° C cooler than the oil coming out by the scavenge.

beat <212
Last edited by beat on Tue Apr 17, 2018 7:58 pm, edited 1 time in total.

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Re: B44 MX Motor

Post by minetymenace » Mon Apr 16, 2018 9:18 pm

beat wrote:ergo
Wow, beat your English is coming on in leaps and bounds!!
There is no evidence to support the notion that life is serious.
Abyssinian Wire-Haired Tripehounds Gnash.

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Re: B44 MX Motor

Post by beat » Tue Apr 17, 2018 8:34 pm

minetymenace wrote:beat your English is coming on in leaps and bounds
Well, - back to the Roots --ore : Work in progress :?: :?:

But what ever, : I am not sure my preaching is from any help....

beat :mrgreen:

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Re: B44 MX Motor

Post by Radman » Fri Aug 24, 2018 4:28 pm

Frames Truck.JPG
Finally received the frames back in May...Ordered in mid 2017.
It was quite a lead time from our Friends at Faber. When we opened the boxes all I could say was "WOW"... It was worth the wait.
Frame 1.JPG
Frame 3.JPG

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Re: B44 MX Motor

Post by beat » Sat Aug 25, 2018 7:09 pm

:cool: :thumb :thumb

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Re: B44 MX Motor

Post by midgie » Sun Aug 26, 2018 10:21 am

:thumb
beat wrote::cool: :thumb :thumb

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