To Whom It May Concern:
Reference: Powerkote Results of brake discs being cryogenically treated by Powerkote
We wish to relate our experience regarding the above treatment. On two of our customer race cars using the official brake discs we encountered massive problems in severe cracking on the front discs. So much so, that this necessitated the replacement of the above on a race by race basis. It was then recommended the front discs be cryogenically treated which we did. These particular cars have now done seven races with no evidence of any cracking. Furthermore, a discernible improvement in both the braking capabilities and the reduction in overheating was a bonus surprise.
I have no hesitation in recommending Powerkote and the process to anyone requiring high performance braking. I will gladly discuss this with anyone interested.
Well done Powerkote
Gavin Orbell Director
Testimonial Coatings for a 2stroke Bike for Off-Road Racing
Thank you for the speedy service and quality workmanship you gave me regarding my 300 cc 2 stroke bike engine.
I reassembled my bike motor with after you coated the intake / outlet ports, piston, head and power valves.
I was a bit concerned with the demands I was going to put the bike through after the rebuild, after seating the piston rings by idling the engine for 3 hours travelling on the back of the bakkie all the way down to Lesotho on Friday.
On Saturday the bike handled flawlessly on a 180 km mountain pass even at heights above 2780 metres above sea level.
On Sunday it was the same, a further 220 km was done at a maximum height of 2900 meters above sea level, without a second's trouble, the temperature remained consistent on the faster areas as well as on the slow revving high altitude rocky climbs. The engine also seemed to run at a lower temperature than usual. Although usually at this stage, the bike radiator boils at maximum altitude for a few minutes and at this altitude the engine heats up very quickly causing the revs to hunt, this was not the case.
The performance of the engine was unbelievable, the engine sounded clean,
the throttle response was immediate and the power delivery was smooth and
consistent from top to bottom, the torque at 2000 rpm was faultless to full
throttle performance at 8000 rpm.
Thank you again. I will defiantly recommend your services and products
to my friends and riding buddies in the future.
082 492 4185
TSP Consultancy cc.
43 Third Street LINDEN 2195 SOUTH AFRICA
Fax: (011) 782-1995 Cell: 082-675-8099
Sartor Bros. Engineering (Pty) Ltd.
195 Booysens Rd.
For attn: Mr. G. Sartor
I am attaching a Test Certificate detailing the test results carried out on panels supplied by you.
The explanation of the tests is as follows:
Gloss (to ASTM D523 60 0 ): 20 ° is used for high gloss paints and 60 ° for semi-matt and matt finishes.
Film Thickness: uM refers to microns, 1 micron = 0,001mm.
Cross-cut Test (to ISO 2409): 11 cuts are made, 1mm apart in one direction, followed by 11 cuts at 90 0 to the first 11 cuts. This creates a lattice of 100 squares. This test is used to determine the adhesion of the coating.
Impact Test (to SABS 146): A specific weight with a specific diameter is dropped from a height. The purpose of this test is to determine the elongation of the coating and is reported as Joules. Generally, the acceptable limit is 6 joules.
Flexibility (to SABS 145): This is determined by bending the coated panel over a mandrel, and the results are reported with reference to the diameter of the mandrel.
Note: ASTM: American Standard of Test Methods
ISO: International Standards Organisation
SABS: South African Bureau of Standards