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Oct 29, 2022 15:02:20 GMT
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So how does the BRM compare to the Brazilian engine you had in there before? It looks like you have more power and similar torque from a smaller capacity. Interestingly those both sound similar when ticking over and in normal use. The Brazil engine felt good, revved well - even taking into account the weight of the crank and was a very quick engine although it didnt feel 'quick' probably because it didnt increase its revs as quickly as previous engines. The BRM however feels completely different to the Brazil block engine and actually more like my original 1730. The 1730 was quite an 'Angry' engine to drive at all speeds and the BRM is less angry until it gets up on the cams and then it is a completely different story. The BRM feels a bit more drivable and has a much wider power band - or so it feels. It is definitely quicker though and i think even with a 4.44 diff it will pull max rpm in 5th. |
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Nov 22, 2022 15:30:27 GMT
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The oil cooler has turned up.  Untitled by Nevtiger, on Flickr The idea is it sits just below the number plate as then i don't need to cut any/much of the lower panel to create airflow. I shall make a new front chassis brace and oil cooler mount to give the cooler some protection. Some thinking to happen first and maybe even some CAD - on the computer not cardboard. |
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I didnt get round to fitting the oil Cooler but it didnt matter last week at Abingdon as the oil never went over 100 as it was so cold! Prep for the event was ok other than the starter motor failing. It is a WOSP hi torque one and it's probably 6-7 years old only. Any way fitting a standard one got it going once i had enough battery power to spin the engine fast enough for it to start. Good event but a big spin on first practice pointed out the tyres are shagged....  Untitled by Nevtiger, on Flickr  Untitled by Nevtiger, on Flickr And then two videos of trying to get off the line. One with launch the other without.........  86CCF822-0529-406A-A449-FA23F181E72C by Nevtiger, on Flickr  C0F74F18-24EB-46D3-B83D-4637A8CF8AC9 by Nevtiger, on Flickr And back to the garage its time to sort out Project Number 3 as the brakes have failed......  Untitled by Nevtiger, on Flickr |
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One option would be to mount the number plate letters on a mesh in front of the oil cooler, Lotus did this on the Elan and won a court case confirming it met the regulations (every thing behind the grille needs to be black as well)  |
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I know it’s not a direct comparison due to unscrubbed tyres / different temps, but it seems to gate quicker without the traction control
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Last Edit: Apr 5, 2023 9:11:25 GMT by jonsey
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I now it’s not a direct comparison due to unscrubbed tyres / different temps, but it seems to gate quicker without the traction control It was quicker without Launch even when the tyres were scrubbed and it was warmer. More work needed! |
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One option would be to mount the number plate letters on a mesh in front of the oil cooler, Lotus did this on the Elan and won a court case confirming it met the regulations (every thing behind the grille needs to be black as well) Excellent idea but i don't have room for an oven and hob as well though.... |
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Oil Cooler. Started to look to see if i could get the cooler in here:  Untitled by Nevtiger, on Flickr  Untitled by Nevtiger, on Flickr After a bit of fettling the answer was yes  Untitled by Nevtiger, on Flickr However, i soon realised that although it would fit i wouldn't be able to get the pipes to it or do them up without other major surgery.  Untitled by Nevtiger, on Flickr Back to the drawing board. With the spoiler off and the chassis brace these pipes can be seen.  Untitled by Nevtiger, on Flickr Perhaps with some pipe bending and stuff the cooler could sit here? Well not the one i had bought but a less wide one might so.....  Untitled by Nevtiger, on Flickr Make some brackets and bend some pipe  Untitled by Nevtiger, on Flickr  Untitled by Nevtiger, on Flickr And end up with this:  Untitled by Nevtiger, on Flickr  Untitled by Nevtiger, on Flickr Old sump guard mounts repurposed for the third time!  Untitled by Nevtiger, on Flickr And now fitted. The bottom chassis brace/cooler mount is higher than the crossmember.  Untitled by Nevtiger, on Flickr  Untitled by Nevtiger, on Flickr Getting plumbed  Untitled by Nevtiger, on Flickr In other news after a spin at Abingdon i thought i ought to replace the tyres....  Untitled by Nevtiger, on Flickr Supposed to be same size as old tyres but are definitely heavier.  Untitled by Nevtiger, on Flickr |
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May 24, 2023 13:51:24 GMT
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Before the event at Abingdon the starter motor has started not to work.... I thought i found the problem when i found loose mounting bolts but that wasn't it. So i changed it for a standard starter. Any way got some time to strip it down and have a look see. I started on the Solenoid. These gear reduction motors use a large rotating contactor to pass current to the actual motor. When i opened it up the rotating bit and the two static bits were mucho dirty and the static parts pitted and bent. Note the big hole dent thing after an initial clean  Untitled by Nevtiger, on Flickr Way dirtier than it looks.  Untitled by Nevtiger, on Flickr Much better  Untitled by Nevtiger, on Flickr Ready to be pulled out and made better.  Untitled by Nevtiger, on Flickr The actual motor seems ok once it was cleaned  Untitled by Nevtiger, on Flickr There is a technique to getting these back together easily apparently.  Untitled by Nevtiger, on Flickr Its all back together but i haven't tried it yet...... |
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Jun 14, 2023 13:21:39 GMT
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I have been out twice on events recently. Once at Goodwood but they abounded the event due to the rain and the standing water but not before two heavy shunts which included a roll. Then to Abingdon Car-nival. The weather was glorious. I did modify the front spoiler to allow some air flow over the oil cooler! Any way a shot in the queue:  IMG_0313 by Nevtiger, on Flickr And some in car!  Abingdon Nev 3rd Run Morning by Nevtiger, on Flickr The car understeers a fair bit more with these tyres so i need to add some negative/lower the front/take off some front ARB or something. |
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Jun 14, 2023 17:17:18 GMT
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Sounds great
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Having had a chance to give int some beans on the new tyres and have the car double driven to get some other feedback one thing came clear and that was Understeer! The car understeered before on the old tyres but i didnt think as pronounced as it does now. So. What to do? The ARB is already as soft as it can go:  Untitled by Nevtiger, on Flickr That will require more work to soften it off if needed. Therefore, i thought maybe add some negative camber and/or lower it. I have gone for a 10mm lowering, this will add some negative as well.  Untitled by Nevtiger, on Flickr  Untitled by Nevtiger, on Flickr  Untitled by Nevtiger, on Flickr  Untitled by Nevtiger, on Flickr This leaves the TCA very close to horizontal or maybe slightly over to downward towards the inside. This will lower the front RCH but also increase the roll axis gradient front to rear and also has the affect of the front RCH 'point' moving outside the wheelbase as it leans. Hopefully the front spring rate and ARB will limit roll enough so that the RCH migration is kept modest and doesn't upset the handling.  Untitled by Nevtiger, on Flickr I can move the front TCA up one hole but i have run out of steering rack height adjustment and as can be seen at the wheel end i cant pack the steering arm point down further either. So if i do move the TCA up i will get back some bump steer. Tracking at parallel  Untitled by Nevtiger, on Flickr |
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Last Edit: Jun 28, 2023 8:58:35 GMT by nevtiger
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Last little job to do before getting back on to the Sunbeam was to adjust the Launch Control settings as they are holding the car back and i can launch it quicker. Then also reset the Oil Temp warnings on the dash to slightly higher. So time to break out the Lap Top  Untitled by Nevtiger, on Flickr I have adjusted the Launch break points up so that the limit RPM is more closely related to the actual speed at each rpm point.  Untitled by Nevtiger, on Flickr |
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Well - that's the end of the season for the Tiger. Last event was the double header at Wiscombe Park Hillclimb. Warmish, wet and slimy! The Cooper Tyres didnt work very well at all in the conditions. The rears lit up off the line but at least they got warm. The fronts never really got warm so the weekend was a bit of slide fest for me. I was also learning the course.... I have missed an entry on the Castle combe Lap and 3/4 Sprint in October so time to put the Tiger to bed for there Winter. But first i re-fitted the WOSP starter after i re-conditioned it. And it works!  Untitled by Nevtiger, on Flickr Bed Time  Untitled by Nevtiger, on Flickr And a video photo of Wiscombe - sound is a bit dodgy though.  81B8E909-D5F9-44B6-8E63-166F0DFDD81E_1_102_o by Nevtiger, on Flickr I did have a Go Pro in but had it on a setting that only Go Pro seems to be able to play. I have reconfigured it now and linked it to Harrys Lap Timer so next year i should have some videos i can learn from....... |
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Last Edit: Oct 3, 2023 14:10:52 GMT by nevtiger
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MiataMark
Club Retro Rides Member
Posts: 2,971
Club RR Member Number: 29
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1990 Mazda MX-52012 BMW 118i (170bhp) - white appliance 2011 Land Rover Freelander 2 TD4 2003 Land Rover Discovery II TD52007 Alfa Romeo 159 Sportwagon JTDm
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I think that is Matt's car, hid dad has one too. Or it might be his dads car....... he has some interesting Austin Rover cars as well. |
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